Roshan checking behavior evolved more naturally than the warding. At the start of training roshan was changed to have very low health so ai could stumble into t

Roshan checking behavior evolved more naturally than the warding. At the start of training roshan was changed to have very low health so ai could stumble into the pit and be able to defeat roshan 1v1. Eventually the ai learned to check roshan and to group up to defeat it, but for some reason they never managed to learn about the respawn cooldown.